CN110480943B - Die for manufacturing convex rubber ring and assembling method thereof - Google Patents
Die for manufacturing convex rubber ring and assembling method thereof Download PDFInfo
- Publication number
- CN110480943B CN110480943B CN201910671026.1A CN201910671026A CN110480943B CN 110480943 B CN110480943 B CN 110480943B CN 201910671026 A CN201910671026 A CN 201910671026A CN 110480943 B CN110480943 B CN 110480943B
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- Prior art keywords
- ring
- mold
- die
- inner cavity
- adjusting sleeve
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 55
- 239000005060 rubber Substances 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 24
- 238000004073 vulcanization Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000011900 installation process Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011344 liquid material Substances 0.000 claims description 2
- 238000010068 moulding (rubber) Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
- B29C33/305—Mounting of moulds or mould support plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a die for manufacturing a convex rubber ring, belonging to the technical field of rubber molding, and the die comprises a die cover and a die base, wherein an upper-middle outer die and a lower-middle outer die are sequentially arranged between the die cover and the die base from top to bottom; the inner part formed by the die cover, the middle and upper outer die, the middle and lower outer die and the die base is provided with a middle and upper inner die, the lower end of the middle and upper inner die is provided with a middle and lower inner die, and the middle and upper inner die and the middle and lower inner die clamp the adjusting sleeve and the inner cavity ring through nuts and internal thread bushings; the rubber ring manufacturing mold provided by the invention can be used for quickly and conveniently taking out a molded product, and the time is saved.
Description
Technical Field
The invention relates to the technical field of rubber molding, in particular to a mold for manufacturing a convex rubber ring and an assembling method thereof.
Background
The rubber mold is a mold for making a rubber member from natural rubber or synthetic rubber. The pouring type rubber mold for producing the rubber part, namely the convex rubber part, shown in figure 1 comprises a mold cover, a mold base, an upper middle outer mold, a lower middle outer mold, an upper middle inner mold, a lower middle inner mold, an adjusting sleeve, an inner cavity ring, a nut and a bushing, and forms a mold cavity.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the die which is convenient for taking out the formed middle convex rubber ring, and solves the defect that the die is difficult to take out after the rubber part is formed in the prior art, so that the product cannot be damaged and destroyed.
The invention is realized by the following steps:
a mould for manufacturing a convex rubber ring is characterized by comprising an upper middle inner mould and a lower middle inner mould which is in clearance fit with the upper middle inner mould; an inner cavity ring is arranged between the upper middle inner die and the lower middle inner die, and the inner cavity ring is formed by assembling a ring 1 part, a ring 2 part and a ring 3 part; an adjusting sleeve is further arranged on the inner side of the inner cavity ring; the lower ends of the upper middle inner die and the lower middle inner die are clamped by the adjusting sleeve and the inner cavity ring through the bushing and the nut to form a whole; the whole is arranged above the mould base; and a middle-lower external mold, a middle-upper external mold and a mold cover are sequentially arranged above the mold base and on the periphery of the whole.
Further, the die cover, the upper and lower outer dies, the middle and lower outer dies, the upper and lower inner dies, the middle and lower inner dies, the inner cavity ring, the adjusting sleeve, the bushing and the die base are assembled in a matching way, and a die cavity is formed in the die.
Further, the inner cavity ring is fixed through a flange hoop in the process of installing the die; the flange hoop comprises a flange hoop 1 part and a flange hoop 2 part; the connecting ends of the flange hoop 1 part and the flange hoop 2 part are fastened and fixed through pins, connecting rods and hexagon socket head cap bolts respectively; the flange hoop is taken down after the inner cavity ring is fixedly installed, the inner cavity ring is prevented from loosening in the process that the bushing and the nut clamp the adjusting sleeve and the inner cavity ring, therefore, the flange hoop is utilized to fix the inner cavity ring in the assembling process, the flange hoop is taken down after the integral assembling is completed, and the next-step assembling is carried out.
Further, the adjusting sleeve is a metal sleeve with a notch in the axial direction.
Further, the bushing is a bushing with a slope, an internal thread and a wrench notch. The design enables the bushing to be in threaded tightening fit with the middle-upper inner die, and the concentricity which cannot be guaranteed due to the existence of the gap between the middle-lower inner die and the middle-upper inner die is guaranteed along with the process that the bushing and the middle-upper inner die are screwed more and more.
Furthermore, the inner side walls of the ring 1 part, the ring 2 part and the ring 3 part of the inner cavity ring are provided with middle holes, and the middle holes are arranged to facilitate the disassembly of the inner cavity ring.
The invention also discloses an assembling method of the die for manufacturing the convex rubber ring, which is characterized in that the assembling and using processes of the die are as follows:
firstly, clamping an adjusting sleeve and an inner cavity ring at the lower ends of an upper middle inner die and a lower middle inner die through a bushing and a nut with threads to form a whole, ensuring the outer diameter of the inner cavity ring by means of a flange hoop in the process of fixing the inner cavity ring, and taking down the flange hoop after clamping;
placing the middle and lower outer molds above the mold base;
step three, the whole assembled in the step one is placed above a mold base;
step four, placing the middle-upper outer mold above the middle-lower outer mold;
injecting liquid material of the rubber ring into a cavity formed in the mold, and covering the mold cover;
and step six, putting the mixture into vulcanization equipment for vulcanization treatment.
Further, the disassembling and mold taking processes of the mold are as follows:
firstly, taking out a die cover and a middle upper outer die; then taking out the upper and lower inner molds, the inner cavity ring, the adjusting sleeve, the middle and lower inner molds, the bushing, the nut and the rubber ring formed in the cavity by means of a tool;
step two, unscrewing the nut and the bush;
step three, taking out the middle lower inner mold and the middle upper inner mold by means of a tool;
step four, taking out the adjusting sleeve;
step five, three parts of the ring 1 part, the ring 2 part and the ring 3 part of the inner cavity ring are taken out by using a tool for three times; because the inner side walls of the ring 1 part, the ring 2 part and the ring 3 part of the inner cavity ring are all provided with the middle holes, the three parts of the inner cavity ring can be conveniently taken out by hooking the middle holes with the help of a tool.
And step six, obtaining the prepared convex rubber piece.
The beneficial effects of the invention and the prior art are as follows:
1. the inner cavity ring in the rubber mold is an integral body formed by assembling three parts, and the rubber part product is in a middle convex shape, namely the diameters of two sides are smaller than the diameter of the middle part, so that the inner cavity ring is difficult to take out after molding, the inner cavity ring is designed into the integral body formed by assembling the three parts, and small holes are drilled on the inner side of the ring, so that the molded rubber part can be conveniently and quickly taken out by using tools, the time is saved, the rubber mold is convenient to mount and dismount, and the quality of the molded product is not influenced.
2. The adjusting sleeve in the rubber mold is a metal sleeve with a notch in the axial direction, can have certain deformation in the radial direction and is used for offsetting a gap between two mandrels when clamping rings so as to ensure the shape and the size of a cavity.
3. The flange hoop used in the process of clamping the ring and the metal sleeve in the installation process of the rubber mold is used for ensuring the size of the ring, so that the size of a cavity is ensured.
4. The bushing and the middle and lower inner molds in the rubber mold are matched through the inclined planes, and the concentricity which cannot be ensured due to the existence of the gap between the middle and lower inner molds and the middle and upper inner molds is ensured along with the screwing process of the threads.
Drawings
FIG. 1 is a three-dimensional structure and a three-dimensional half-sectional view of a convex annular rubber member of a rubber product in the background art;
FIG. 2 is a schematic semi-sectional view of the overall structure of the mold for manufacturing the convex rubber ring according to the invention;
FIG. 3 is a schematic diagram showing the structure and assembly of the parts of the inner cavity ring in the mold for manufacturing the convex rubber ring according to the present invention;
FIG. 4 is a schematic structural diagram of an adjusting sleeve in the mold for manufacturing the convex rubber ring according to the invention;
FIG. 5 is a schematic view of the structure of the internally threaded bushing of the mold for making a medium convex rubber ring according to the present invention
FIG. 6 is a schematic structural view of a flange hoop used in the installation process of the mold for manufacturing the convex rubber ring according to the present invention;
the mold comprises a mold cover 1, a mold cover 2, a middle upper outer mold, a mold cavity ring 3, a middle lower outer mold 4, a mold base 5, a bushing 6, a nut 7, a middle lower inner mold 8, a mold cavity 9, an adjusting sleeve 10, a middle upper inner mold 11, a flange hoop 1 part 21, a pin 22, a connecting rod 23, a flange hoop 2 part 24, an inner hexagon bolt 25, a ring 1 part 31, a ring 2 part 32 and a ring 3 part 33.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention more clear, the present invention is further described in detail by the following examples. It should be noted that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 2, the mold for manufacturing the convex rubber ring of the present invention comprises a mold cover 1, a mold base 5, an upper and middle outer mold 2, an upper and middle outer mold 4, an upper and middle inner mold 11, an inner and middle inner mold 8, an adjusting sleeve 10, an inner cavity ring 3, a nut 7, and a bushing 6. The rubber mold comprises a mold cover 1, an upper and middle outer mold 2, a lower and middle outer mold 4, an upper and middle inner mold 11, a lower and middle inner mold 8, an inner cavity ring 3, an adjusting sleeve 10, a bushing 6, a nut 7 and a mold base 5 which are assembled in a matched mode to form a cavity 9 of the rubber mold. The structure of the cavity is the same as that of the required rubber product, the shrinkage rate of different rubbers is required to be considered for the size of the cavity, and the cavity is enlarged or reduced on the basis of the size of the required rubber product, so that the proper product size can be obtained.
The assembly and use process of the die comprises the following steps:
in a first step, the upper and middle inner dies 11, 9 clamp the adjustment sleeve 10 and the inner cavity ring 3 via the threaded bushing 6 and the nut 7. In the process of forming an integral, the outer diameter of the inner cavity ring 3 is ensured by means of a flange hoop, and the flange hoop is taken down after being clamped, wherein the flange hoop comprises a flange hoop 1 part 21 and a flange hoop 2 part 24; the connecting ends of the flange hoop 1 part 21 and the flange hoop 2 part 24 are fastened and fixed through a pin 22, a connecting rod 23 and an inner hexagon bolt 25 respectively;
secondly, placing the middle and lower outer molds 4 on the mold base 5;
thirdly, the whole assembled in the first step is placed on the mold base 5;
fourthly, placing the upper middle and outer die 2 on the upper middle and lower outer die 4;
fifthly, injecting polyurethane rubber, and covering the mold cover 1;
and sixthly, putting the mixture into vulcanization equipment for vulcanization treatment.
The process of disassembling and taking the die comprises the following steps:
firstly, prying a lower die cover 1 and a middle upper outer die 2 by using a opener; the upper middle inner die 11, the inner cavity ring 3, the adjusting sleeve 10, the middle lower inner die 8, the bushing 6, the nut 7 and the rubber ring formed in the cavity 9 are taken out by means of tools;
secondly, unscrewing the nut 7 and the bush 6 with threads;
thirdly, taking out the middle lower inner die 8 and the middle upper inner die 11 by means of a tool;
fourthly, taking out the adjusting sleeve 10;
fifthly, taking out three parts of the inner cavity ring 3 in three times;
and sixthly, obtaining the prepared convex rubber part, and trimming the rubber part and the like.
As shown in fig. 1, the molded inner ring is difficult to remove because the rubber member product 9 is convex, i.e., the diameter of both sides is smaller than that of the middle. As shown in fig. 3, the inner cavity ring 3 is designed to be a three-part assembly, fig. 3a is a part of the inner cavity ring 3, fig. 3b is a part of the inner cavity ring 1, and fig. 3c is a part of the inner cavity ring 2. And the inner side walls of the ring 1 part 31, the ring 2 part 32 and the ring 3 part 33 of the inner cavity ring 3 are all provided with middle holes, the combination can conveniently and quickly take out the molded rubber part, and the inner cavity ring 3 is an integrated body assembled by three parts. After the rubber product is molded, the ring 3 portion 33 is removed, and then the ring 1 portion 31 and the ring 2 portion 32 are sequentially removed. As shown in fig. 4, fig. 4 is a schematic structural diagram of an adjusting sleeve in a mold for manufacturing a convex rubber ring according to the present invention, and the adjusting sleeve 10 according to the present invention is a metal sleeve with a notch in an axial direction. The adjusting sleeve 10 is provided with a notch in the axial direction, so that the adjusting sleeve can deform to a certain extent in the radial direction, and the size of the inner cavity ring 3 is further ensured.
As shown in fig. 5, in the structure of the bushing 6, the bushing 6 and the middle and lower inner dies are positioned by inclined planes, and the inner hole of the bushing 6 is threaded and can be in threaded and screwed fit with the middle and upper inner dies 11, and as the bushing 6 and the middle and upper inner dies 11 are screwed more and more tightly, the middle and lower inner dies 8 and 11 also clamp the inner cavity ring 3 and the adjustment sleeve 10, and the concentricity which cannot be ensured due to the existence of the gap between the middle and lower inner dies 8 and the middle and upper inner dies 11 is ensured. In order to ensure that the size of the cavity 9 is formed during the process that the upper and lower inner dies 11 and 8 can clamp the inner cavity ring 3 and the adjusting sleeve 10 through the nut 7 and the bush 6, a flange hoop is needed to fix the inner cavity ring 3 during the process of die installation. As shown in fig. 6, fig. 6 is a schematic structural diagram of a flange hoop used in a process of installing a mold for manufacturing a convex rubber ring, wherein the flange hoop comprises a flange hoop 1 part 21 and a flange hoop 2 part 24; the connecting ends of the flange hoop 1 part 21 and the flange hoop 2 part 24 are fastened and fixed through a pin 22, a connecting rod 23 and an inner hexagon bolt 25 respectively. And after the middle upper inner die 11 and the middle lower inner die 8 clamp the inner cavity ring 3 and the adjusting sleeve 10 through the nut 7 and the bushing 6 with threads, the flange hoop is removed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (7)
1. The mould for manufacturing the convex rubber ring is characterized by comprising an upper middle inner mould (11) and a lower middle inner mould (8) in clearance fit with the upper middle inner mould; an inner cavity ring (3) is arranged between the upper middle inner die (11) and the lower middle inner die (8), and the inner cavity ring (3) is formed by assembling a ring 1 part (31), a ring 2 part (32) and a ring 3 part (33); an adjusting sleeve (10) is further arranged on the inner side of the inner cavity ring (3); the lower ends of the upper middle inner die (11) and the lower middle inner die (8) clamp the adjusting sleeve (10) and the inner cavity ring (3) through the bushing (6) and the nut (7) to form a whole; the whole is arranged above the mould base (5); a middle-lower external mold (4), a middle-upper external mold (2) and a mold cover (1) are sequentially arranged above the mold base (5) and on the periphery of the whole;
the bushing (6) is a bushing with a slope, an internal thread and a wrench notch.
2. The mold for manufacturing the convex rubber ring as claimed in claim 1, wherein the mold cover (1), the middle and upper outer mold (2), the middle and lower outer mold (4), the middle and upper inner mold (11), the middle and lower inner mold (8), the inner cavity ring (3), the adjusting sleeve (10), the bushing (6) and the mold base (5) are assembled in a matching way, and a cavity (9) is formed in the mold.
3. The mould for manufacturing the convex rubber ring is characterized in that the inner cavity ring (3) is fixed by a flange hoop during the installation process of the mould, and the flange hoop is arranged on the inner cavity ring (3); the flange hoop comprises a flange hoop 1 part (21) and a flange hoop 2 part (24); the connecting ends of the flange hoop 1 part (21) and the flange hoop 2 part (24) are fastened and fixed through a pin (22), a connecting rod (23) and an inner hexagon bolt (25) respectively; and the flange hoop is taken down after the inner cavity ring (3) is fixedly installed.
4. The mold for manufacturing a medium convex rubber ring as claimed in claim 1, wherein said adjusting sleeve (10) is a metal sleeve with a notch in the axial direction.
5. The mold for manufacturing the convex rubber ring as claimed in claim 1, wherein the inner side walls of the ring 1 part (31), the ring 2 part (32) and the ring 3 part (33) of the cavity ring (3) are all provided with a central hole.
6. An assembling method of a mold for manufacturing a convex rubber ring according to claim 1, wherein the assembling and using process of the mold is as follows:
firstly, clamping an adjusting sleeve (10) and an inner cavity ring (3) at the lower ends of an upper middle inner die (11) and a lower middle inner die (8) through a bush (6) with threads and a nut (7) to form a whole, ensuring the outer diameter of the inner cavity ring (3) by means of a flange hoop in the process of fixing the inner cavity ring (3), and taking down the flange hoop after clamping;
secondly, placing the middle and lower outer molds (4) above the mold base (5);
step three, the whole assembled in the step one is placed above a mold base (5);
fourthly, placing the middle and upper outer die (2) above the middle and lower outer die (4);
step five, injecting liquid materials of the rubber ring into a cavity (9) formed in the die, and covering the die cover (1);
and step six, putting the mixture into vulcanization equipment for vulcanization treatment.
7. The assembling method of the mold for manufacturing the convex rubber ring as claimed in claim 6, wherein the disassembling and removing process of the mold comprises:
firstly, taking out a die cover (1) and a middle upper outer die (2); then taking out the upper and lower inner molds (11), the inner cavity ring (3), the adjusting sleeve (10), the middle and lower inner molds (8), the lining (6), the nut (7) and the rubber ring formed in the cavity (9);
step two, unscrewing the nut (7) and the bush (6);
step three, taking out the middle lower internal mold (8) and the middle upper internal mold (11);
step four, taking out the adjusting sleeve (10);
taking out three parts of a ring 1 part (31), a ring 2 part (32) and a ring 3 part (33) of the inner cavity ring (3) for three times;
and step six, obtaining the prepared convex rubber piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671026.1A CN110480943B (en) | 2019-07-24 | 2019-07-24 | Die for manufacturing convex rubber ring and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671026.1A CN110480943B (en) | 2019-07-24 | 2019-07-24 | Die for manufacturing convex rubber ring and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110480943A CN110480943A (en) | 2019-11-22 |
| CN110480943B true CN110480943B (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910671026.1A Active CN110480943B (en) | 2019-07-24 | 2019-07-24 | Die for manufacturing convex rubber ring and assembling method thereof |
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| CN (1) | CN110480943B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998004853A1 (en) * | 1996-07-30 | 1998-02-05 | Maschinenfabrik Sulzer-Burckhardt Ag | Method of manufacturing a sealing element, and sealing element manufactured by that method |
| CN107127916A (en) * | 2017-07-04 | 2017-09-05 | 中车青岛四方车辆研究所有限公司 | Evagination core and sulfurizing mould |
| JP6526937B1 (en) * | 2019-01-29 | 2019-06-05 | Ｔｐｒ株式会社 | Method of manufacturing seal ring and seal ring |
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| CN110480943A (en) | 2019-11-22 |
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